IP-Info is a website where you can find out what your IP is as well as your user agent and information about your browser and OS. The site also has tools for looking up information about a particular IP and reverse DNS lookups. There is also a tool where you can check "is this site down" and numerous informative articles.

Resources and Tutorials

I have not produced my own articles and resources just yet for these problems.

However, here are some links that you may find useful, some you can work through in your own time. Some of thse may assume some basic knowledge, others are more forgiving

Websites and Resources

#1 wisc-online Under the Techincal section you can learn about AC, DC, digital and semiconductor circuits and devices. These are flash based slides which will walk you through anything at your own pace. Often if any other knowledge is required the slides tell you "Remember from ... if not, go back and go over it" so it's a good starting point for any beginners.

#2 AllAboutCircuits Another very good site that gives plenty of examples and explains things in stages.

#3 ecircuitcenter This is mainly centred around analogue and control electronics and using SPICE to simulate behaviour of devices.

Linear Technology - LTspice: LTspiceAdvanced use: If you need specific component models you can often download the manufacturer reference SPICE model online and include that in your schematic to have a rough idea of whether yoru circuit will work correctly.

I have not produced my own articles and resources just yet for these problems.

However, here are some links that you may find useful, some you can work through in your own time. Some of thse may assume some basic knowledge, others are more forgiving

Websites and Resources

#1 wisc-online Under the Techincal section you can learn about AC, DC, digital and semiconductor circuits and devices. These are flash based slides which will walk you through anything at your own pace. Often if any other knowledge is required the slides tell you "Remember from ... if not, go back and go over it" so it's a good starting point for any beginners.

#2 AllAboutCircuits Another very good site that gives plenty of examples and explains things in stages.

#3 ecircuitcenter This is mainly centred around analogue and control electronics and using SPICE to simulate behaviour of devices.

Linear Technology - LTspice: LTspiceAdvanced use: If you need specific component models you can often download the manufacturer reference SPICE model online and include that in your schematic to have a rough idea of whether yoru circuit will work correctly.

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